The treasurer, Joe Hockey, announcing details of the Australian government's commission of audit to look for spending cuts, as well as plans to raise the debt ceiling. Photograph: Alan Porritt/AAP

It’s amazing what a difference shifting from opposition to government makes. Yesterday while announcing his commission of audit, the treasurer, Joe Hockey, also stated that he would raise the Australian government’s debt ceiling from $300bn to $500bn.

Now he gave some quite sensible reasons for this decision. He noted that the current debt ceiling would be reached on 12 December. As a result he suggested, “We need to move quickly to deal with this, particularly in the wake of what has been revealed in the United States in recent times.”

The December debt ceiling date is no surprise. It was known when the budget was released in May, but the former government in its infinite foolishness, decided not to raise the ceiling for fear of looking like it was maxing out the “credit card” prior to the election.

The reason for their fear was due to long run attacks by the Liberal party – notably Joe Hockey – that raising the debt ceiling was a sign of economic mismanagement.

For example, in May 2012, Hockey said, “Australians are right to be concerned about handing Wayne Swan yet another increase in our nation’s credit card limit.” He then went on Alan Jones to argue that the government could not make claims that it was making savings if it was also increasing the debt ceiling from $250bn to $300bn.

He also invoked the bogeyman of sovereign risk, telling reporters, “speaking of sovereign risk, it is immensely disappointing that this morning the government again used the numbers in parliament to close down any debate on the increase in the debt limit to $300bn.”

Joe Hockey wasn’t alone among his Coalition colleagues in his views. Tony Abbott noted last year that: “If the government really thinks that a surplus can be delivered, as opposed to being merely forecast, why is it proposing to add a further $50bn to the Commonwealth’s debt ceiling?”

Later in the year, Joe Hockey added, “The previous debt ceiling of $250bn was raised by Labor to $300bn in the May budget further confirming its inability to curb its debt addiction.”

Suddenly it seems increasing the debt ceiling by not just $50bn but $200bn is not a sovereign risk issue, nor a sign that the government is not going to make savings, nor that the government is unable to curb its “debt addiction”, nor that the government cannot deliver a surplus.

Now Joe Hockey tells us that “what matters is not the debt limit”. What is important is just the “level of debt” and that “the credit rating is what matters”.

But the Treasurer’s reasoning is correct — we should wish to avoid a US-style debt ceiling fight.

Oddly, however, he seems only to have realised this in “recent times”. But the US had a debt ceiling fight two years ago in 2011. Back then, Hockey said the lesson was: “Don’t keep spending too much money. Don’t accrue that debt”. He suggested rather cryptically that Australia could “end up in a position where Australia refuses to increase its debt ceiling”.

The only way that could possibly happen is if one side of politics blocked the increase, and the only side of politics suggesting anything like doing that was Hockey’s.

Indeed in 2011, in response to Wayne Swan’s suggestions that the debt ceiling needed to be higher for reasons of liquidity, Joe Hockey wrote in The Australian, that: “Whilst the Coalition has supported this in the past, the government should not expect a rubber stamp this time.”

Now he is increasing it by 66% and claiming that: “The debt limit needs to be set so as to provide sufficient headroom to ensure there is stability and certainty for the financial markets.”

Watch what he does, not what he says, I guess.

But despite the utter hypocrisy, it remains a very good decision.

The debt ceiling should never be a political fight. In the first place it is an arbitrary number — and increasing it does not affect the way market views Australia’s debt position. No one thinks a debt ceiling is any real ceiling, because just as it was arbitrarily set, it can be arbitrarily raised.

All the debt ceiling ends up becoming is a political football used by the opposition party to suggest the government are profligate spenders.

If a party is so stupid as to actually threaten to block an increase you get a situation like what happened in the USA. With an economy already just limping along, the fight over the debt ceiling destroyed confidence in the economy:

As a rule I believe consumer confidence reflects the reality of the economy, rather than drives it, but when purely political actions serve to destroy confidence, then that has real economic consequences in terms of spending, investment and job hiring — all of which are decline when confidence falls.

So Joe Hockey is right to ensure Australia avoids such foolishness. Wayne Swan should have had the courage to do the same thing when he was Treasurer. The only problem is had he done so, Joe Hockey would have likely threatened to block it.